But not God === Jesus. :-)

So then there's a concept of "godiness" to match "truthiness."

Is there a man page for this stuff?

You're looking for the ecumenical creeds, the first list on this page: http://www.reformed.org/documents/index.html

The Athanasian Creed and the Definition of Chalcedon are probably the most relevant, as they deal specifically with Christological questions. The Apostles' and Nicene are valuable, but are too early to have the specifics nailed down just yet. (In historical terms, an Arian or Sabellian would be able to agree with their content without too much equivocation or mental reservation.)

No. But there are multiple competing, contradictory and vague interpretations of multiple translations and iterations of a "manpage", with centuries of cruft attached.

The Trinity as a concept is basically just annotated with "you are not expected to understand this," possibly because it attempts to describe a state of divine being which is beyond human comprehension, but more likely because it's actually nonsense.

http://www.newadvent.org/cathen/ and http://www.newadvent.org/summa/index.html

but the former is more like INFO while the latter is more like `man builtins` (that is, it assumes you already know a lot about the system)

In Ruby, God === Jesus.